Reconstruction of equivalent currents using a near-field data transformation - with radome applications
Persson, Kristin LU and Gustafsson, Mats LU
(2004)
In Technical Report LUTEDX/(TEAT-7125)/1-15/(2004)
- Abstract
- Knowledge of the current distribution on a radome can be used to improve
radome design, detect manufacturing errors, and to verify numerical simulations.
In this paper, the transformation from near-field data to its equivalent
current distribution on a surface, i.e., the radome, is analyzed. The
transformation is based on the surface integral representation that relates the
equivalent currents to the near-field data. The presence of axial symmetry
enables usage of the fast Fourier transform (FFT) to reduce the computational
complexity. Furthermore, the problem is regularized using the singular
value decomposition (SVD). Both synthetic and measured data are used... (More) - Knowledge of the current distribution on a radome can be used to improve
radome design, detect manufacturing errors, and to verify numerical simulations.
In this paper, the transformation from near-field data to its equivalent
current distribution on a surface, i.e., the radome, is analyzed. The
transformation is based on the surface integral representation that relates the
equivalent currents to the near-field data. The presence of axial symmetry
enables usage of the fast Fourier transform (FFT) to reduce the computational
complexity. Furthermore, the problem is regularized using the singular
value decomposition (SVD). Both synthetic and measured data are used to
verify the method. The quantity of data is vast since the height of the radome
corresponds to 29 − 43wavelengths in the frequency interval 8.0 − 12.0 GHz.
It is shown that the method gives an accurate description of the field radiated
from an antenna, on a surface enclosing it. Moreover, defects on the radome,
not localized in the measured near field, are focused and detectable on the
radome surface. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/530299
- author
- Persson, Kristin
LU
and Gustafsson, Mats
LU
- organization
- publishing date
- 2004
- type
- Book/Report
- publication status
- published
- subject
- keywords
- arbitrary geometric structures, surface integral equation, singular value decomposition, near field to equivalent currents transformation, radome applications
- in
- Technical Report LUTEDX/(TEAT-7125)/1-15/(2004)
- pages
- 15 pages
- publisher
- [Publisher information missing]
- report number
- TEAT-7125
- language
- English
- LU publication?
- yes
- additional info
- Published version: Progress in Electromagnetics Research, Vol. 54, pp. 179-198, 2005.
- id
- d1451cbd-f177-4f1e-9937-53d849c23337 (old id 530299)
- date added to LUP
- 2016-04-04 14:16:03
- date last changed
- 2018-11-21 21:19:17
@techreport{d1451cbd-f177-4f1e-9937-53d849c23337,
abstract = {{Knowledge of the current distribution on a radome can be used to improve<br/><br>
radome design, detect manufacturing errors, and to verify numerical simulations.<br/><br>
In this paper, the transformation from near-field data to its equivalent<br/><br>
current distribution on a surface, i.e., the radome, is analyzed. The<br/><br>
transformation is based on the surface integral representation that relates the<br/><br>
equivalent currents to the near-field data. The presence of axial symmetry<br/><br>
enables usage of the fast Fourier transform (FFT) to reduce the computational<br/><br>
complexity. Furthermore, the problem is regularized using the singular<br/><br>
value decomposition (SVD). Both synthetic and measured data are used to<br/><br>
verify the method. The quantity of data is vast since the height of the radome<br/><br>
corresponds to 29 − 43wavelengths in the frequency interval 8.0 − 12.0 GHz.<br/><br>
It is shown that the method gives an accurate description of the field radiated<br/><br>
from an antenna, on a surface enclosing it. Moreover, defects on the radome,<br/><br>
not localized in the measured near field, are focused and detectable on the<br/><br>
radome surface.}},
author = {{Persson, Kristin and Gustafsson, Mats}},
institution = {{[Publisher information missing]}},
keywords = {{arbitrary geometric structures; surface integral equation; singular value decomposition; near field to equivalent currents transformation; radome applications}},
language = {{eng}},
number = {{TEAT-7125}},
series = {{Technical Report LUTEDX/(TEAT-7125)/1-15/(2004)}},
title = {{Reconstruction of equivalent currents using a near-field data transformation - with radome applications}},
url = {{https://lup.lub.lu.se/search/files/6320281/624869.pdf}},
year = {{2004}},
}